Companies with national qualification, can be engaged in waterproof highways, railways and civil construction, municipal engineering of underground engineering, the waterproof project etc.

公司具备国家级防水资质，可从事公路、铁路、民用建筑、地下工程、市政工程等行业的防水工程。

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Foundation pit engineering is a rich and various field in underground engineering construction, which is also the most complicated technique filed in civil engineering.

基坑工程是地下工程施工中内容丰富且富有变化的领域，是土木工程中最为复杂的技术领域之一。

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They also enjoy a continuing monopoly over construction and civil engineering projects, from dams to bridges, and highways to metropolitan underground light railways.

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